ONE DAY is a romantic drama, directed by Tong – Banjong Pisanthanakun, the director of Pee Mak and Hello Stranger, starring Ter – Chantavit Dhanasevi, a multitalented actor who gained almost 10 kg, permed his hair, and wore specially-made false teeth to play a geeky IT officer ‘Denchai’. At his side is the rising actress, Mew – Nittha Jirayangyurn, who took on the challenge to play ‘Nui’, the hot confident girl in the Marketing department, a role that she had not taken on before, and Tui – Teerapat Satjakul, a prominent guest actor in the role of the company’s owner ‘Top’. The cast and crew went all the way to shoot the film in Hokkaido, Japan where the story takes place.